Air directing device or nozzle for use in ventilating systems



M1, 1940. s. HALL ET AL 2,197,614

AIR DIRECTING DEVICE OR NOZZLE FOR USE IN VENTILATING SYSTEMS Filed July 6, 1938 I 2 Sheets-Sheet l J /G/ 30 19 1 /6 3 30 139 a 2/ Q f6 16. 65 I V 15 221T 2.9: 15 f4 9 wa April 16, 1940. s, HALL ETAL 2,197,614

AIR DIRECTING DEVICE on NOZZLE FOR USE IN VENTILATING SYSTEMS Filed July 6, 1938 2 Sheets-Sheet 2 Patented Apr. 16, 1940 UNITED STATES Sydney Hall and Alfred Myers, Ashton-under- Lyne, England, assignors to Hall & Kay, Limited, Ashton-under-Lyne, England Application July 6, 1938, Serial No. 217,686

In Great Britain June 23, 1937 5 Claims.

This invention has reference to air directing devices or nozzles for use in ventilating systems.

In ventilating systems it is already known to employ an air directing device or nozzle comprising an adjustable member which in one position causes the air to issue into the space or compartment to be ventilated, in the form of a solid stream, the direction of which in some cases may be variable, and in another position causes the air to be diffused radially, and in a third position cuts off air. v

The main object of the present invention is to provide an air directing device or nozzle by means of which the air can be caused to issue in the form of a solid stream, the direction of which may or may not be variable, or in the form of a radial diffusion, or partly in the one form and partly in the other, without, if desired, variation of the quantity of the air issuing from the device or nozzle.

An air directing device or nozzle in accordance with the invention comprises a housing mounted in the wall of an air duct or equivalent to which the air for ventilation is supplied, and provided with a plurality of ports surrounding a tubular member which is adjustably mounted in said housing and provided at its inlet end with inlet ports adapted to be communicated with and cut off from the air duct or equivalent, and at its outlet end with a flared or other external diffusing surface, adapted to co-act with the ports in the housing, the arrangement being such that in one position of the tubular member in the hous ing, the outlet end of the member closes the ports in the housing and the ports in the inlet end of the member pass into the air duct or equivalent and allow air from the latter to pass into the member from the outlet end of which it issues in the form of a solid stream, and in another position of the tubular member in the housing the inlet ports of the member are drawn into the housing and cut off from the air duct or equivalent and the outer end of the member opens the ports in the housing so that air issuing through said ports impinges against the diffusing surface of the member and is diffused radially, while in intermediate positions of the tubular member in the housing air enters the member by way of the ports at its inlet and issues from the member in the form of a solid stream, and air also issues from the ports in the housing and is diffused radially by the diffusing surface at the outlet end of the tubular member.

In the accompanying drawings Fig. l is an elevation, Fig 2 is a plan, Fig. 3 is a vertical section, Fig. 4 is an underside plan of Fig. 3, and Figs. 5 and. 6 are vertical sections at right angles to Fig. 3 illustrating one embodiment of the invention. Fig. 7 is a vertical section and Fig. 8 is a v, 197 14 PATENT OFFICE a plan on the line VIII-VIII in Fig. 7 illustrating another embodiment of the invention. On the drawings and in the following description the reference numerals indicate like parts.

Referring first to Figs, 1 to 6 of the drawings, 1

an air duct H. In the inner cylindrical portion I I is slidably mounted a tubular member IS. The inner end I9 of the tubular member I8 is closed and near said end there are formed in the wall of said member ports 20 adapted to establish communication between the air duct I1 and the bore of the member I8 when the latter is pushed inwards and to cut off said communication when the member is drawn outward. The inner end of the tubular member I8 has secured to it a thin plate 2|, the ends 2Ia of whichproject beyond the member'and are adapted when the member is drawn outward to engage the inner end of the inner cylindrical portion II to limit the outward movement of the member I8. The outer end 22 of the member I8 is flared and formed with an external flange 23 adapted when said member is pushed inward to seat against the end of the outer cylindrical portion III to limit the movement of the member I8 and to also close the exit from the ports I3.

When the tubular member I8 is pushed inward to the maximum extent the flange 23 on its flared outer end 22 seats-against the outer end of the outer cylindrical portion In of the housing 9 and closesexit from the ports I3.in the housing and the ports 20 in the wall of the tubular member I8 are projected intothe air duct H as shown in Fig. 3. Air now passes from the duct I! through the ports 20 into the bore of the member I8 and issues from the outlet end 22 of same in the form of a solid stream or jet. member I8 is drawn outward to the maximum extent the ports 20 in the wall of the member pass into the inner cylindrical portion II of the housing 9 and are cut off from the air duct I1 and at the same time the flange 23 on the flared outer end 22 of the tubular member I8 is moved away from the outer portion Id of the housing 9 to open the exit from the ports is in the latter as shown in Fig. 5, Air now issues from the duct I'I through ports I 3 and impinging against the flange 23 on the flared outer end of the tubular member I8 is diffused radially.

In intermediate positions of the tubular member I8 the ports 20 in the latter are partly pro- When the tubular jected into the air duct l! and the flange 23 on the outer end of the member opens the exit from the ports l3, as exemplified in Fig. 6, so that air can pass from the duct H by way of the ports 20 into the member and issue therefrom in the form of a solid stream, and also by way of the ports l3 and be difiused radially by the flange 23 on the outlet end of the tubular member.

In order that the direction of the solid stream of air issuing from the tubular member l8 may be diverted in any direction the member is rotatable in the inner cylindrical portion H of the housing 9 and has provided in its outlet end 20 a oafile 24, Figs. 3 and 4, mounted on a transverse pivot 25 and adapted to be thrown overfrom a normal position shown in full lines, to a position indicated in dotted lines in Fig. 3 in which it directs the air laterally of the axis of the member l8.

In the embodiment of the invention illustrated in Figs. 7 and 8, the flange M of the housing 8 instead of being secured to the wall is of the air duct I1, is formed with a peripheral groove in which is disposed a packing ring 26, and is mounted in a part spherical mounting 27. The mounting 2? is made in two parts 27a, 27b formed with flanges Zlc, 21d secured together and to the wall M5 by bolts 28. The parts 21a, 2?!) are also formed with internal beads Z'Ie, Z'if constituting stops within the limits imposed by which the housing 9 is capable of universal angular ad justment to vary the direction of the air issuing from the tubular member 18. In all other respects the operation of this embodiment of the invention is the same as before described.

In. all cases the various parts of the device or nozzle may be so designed that in all adjusted positions of the member I8 the quantity of air admitted through or by the device or nozzle remains constant.

In some cases means may be provided for cutting off the supply of air through or by the device or nozzle. Such means may conveniently take the form of a sleeve valve 29, Figs. 3 and 4, slidably mounted in the tubular member l8 and operable by a finger-piece 29a to close and open the inlet ports 20 of the member. By closing the inlet ports 2E! of the tubular member l8 by means of the valve 29 and also closing the ports l3 in the housing 9 by the flange 23 of the flared outer end of the member, the delivery of air can be entirely out ofi.

The pivot 25 on which the bailie 24 is mounted, conveniently serves as a means for operating the tubular member l8.

What we claim by our invention and desire to secure by Letters Patent is:

1. An air directing device for use in ventilating systems comprising an outer cylindrical member adapted to be mounted in the wall of an air supply duct, an inner cylindrical member concentrically disposed with respect to the outer cylindrical member, spaced radial arms joining the two cylindrical members and providing air passages between them, and a tubular member slidably disposed in the inner cylindrical member and having its inner end closed and its outer end flanged to seat against the outer end of the outer cylindrical member and having a circumferential series of ports at its inner end, whereby the adjustment of the tubular member controls the passage of air through the annular space between the two cylindrical members and through said ports.

2. An air directing device for use in ventilating systems comprising a spherical mounting adapted to be connected to an air supply duct, an outer cylindrical members having a complementary spherical part bearing in said mounting for universal movement therein, an inner cylindrical member concentrically disposed with respect to the outer cylindrical member, spaced radial arms joining the two cylindrical members and providing air passages between them, and a tubular member slidably disposed in the inner cylindrical member and having its inner end closed and its outer end flanged to seat against the outer end of the outer cylindrical member and having a circumferential series of ports at its inner end, whereby the adjustment of the tubular member controls the passage of air through the annular space between the two cylindrical members and through said ports.

3. An air directing device for use in ventilating systems comprising an outer cylindrical member adapted to be mounted in the wall of an air supply duct, an inner cylindrical member concentrically disposed with respect to the outer cylindrical member, spaced radial arms joining the two cylindrical members and providing air passages between them, a tubular member slidably disposed in the inner cylindrical member and having its inner end closed and its outer end flanged to seat against the outer end of the outer cylindrical member and having a circumferential series of ports at its inner end, whereby the adjustment of the tubular member controls the passage of air through the annular space between the two cylindrical members and through said ports, and a baflie pivoted on a transverse axis in the tubular member.

4. An air directing device for use in ventilating systems comprising an outer cylindrical member adapted to be mounted in the wall of an air supply duct, an inner cylindrical member concentrically disposed with respect to the outer cylindrical member, spaced radial arms joining the two cylindrical members and providing air passages between them, a tubular member slidably disposed in the inner cylindrical member and having its inner end closed and its outer end flanged to seat against the outer end of the outer cylindrical member and having a circumferential series of ports at its inner end, whereby the adjustment of the tubular member controls the passage of air through the annular space between the two cylindrical members and through said ports, and a sleeve valve in the tubular member in control of the said ports.

5. An air directing device for use in ventilating systems comprising an outer cylindrical member adapted to be mounted in the wall of an air supply duct, an inner cylindrical member concentrically disposed with respect to the outer cylindrical member, spaced radial arms joining the two cylindrical members and providing air passages between them, a tubular member slidably disposed in the inner cylindrical member and having its inner end closed and its outer end flanged to seat against the outer end of the outer cylindrical member and having a circumferential series of ports at its inner end, whereby the adjustment of the tubular member controls the passage of air through the annular space between the two cylindrical members and through said ports, a bafile pivoted on a transverse axis in the tubular member, and a sleeve valve in the tubular member in control of the said ports.

SYDNEY HALL. ALFRED MYERS. 

